Send Invoices | WordPress.org

I would like to know if there is an option to send paid invoices to customers through your plugin automatically.

I found this post that talks about how to do it::
https://support.myworks.software/360008529834-Orders/7403721089687-Emailing-an-invoice-to-a-customer-from-QuickBooks?from_search=155000150

but I can’t find the dropdown menu to change the options mentioned in the post.